In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Safety of Tetrakis(acetonitrile)palladium(II) tetrafluoroborate, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 21797-13-7, name is Tetrakis(acetonitrile)palladium(II) tetrafluoroborate. In an article，Which mentioned a new discovery about 21797-13-7
A phosphine sulfide Pd(II) complex, [Pd(p2S2)2](BF4)2 (1) (p2S2 = 1,2-bis(diphenylphosphino)ethane disulfide), was synthesized and characterized by an X-ray crystal structure analysis and 31P NMR spectroscopy. The p2S2 ligand exchange rate of 1 with free p2S2 in chloroform was revealed to be comparable to the general solvent exchange rate on Pd(II). The catalytic activity of 1 was evaluated by carrying out the Heck reaction. The diminishing of the induction period and acceleration of the reaction were observed for 1 by comparing the phosphine Pd(II) complexes with a leaving chloro ligand, [PdCl(p3)]Cl (p3 = bis[2-(diphenylphosphino)ethyl]phenylphosphine) and [PdCl(pp3)]Cl (pp3 = tris[2-(diphenylphosphino)ethyl]phosphine), and the catalytic activity was comparable to that of the phosphine Pd(0) complex, [Pd(PPh3)4]. Such a high catalytic activity of 1 is attributed to the pi-accepting ability of the phosphine sulfide S atom which stabilizes the catalytically active Pd(0) species electronically and weak sigma-donation of the S atom which does not block the formation and a subsequent reaction of the Pd(II) substrate adduct in the catalytic cycle.
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Reference：
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method